Possible to setup a custom PIN lock screen on my Tab S?

Long story short I needed to set op a PIN-code on my TAB S to be able to connect to a network. Now when that is done, however, i do not want to press the 4 digit code every time i want to get pass lock screen. When i go Settings -> Device -> Lock Screen -> Enter Pin the "Swipe", "Pattern", "Fingerprint" and "None" are greyed out. "Disabled by admin, encryption policy, or credential storage" it says.